Nuevo II Wheel bolts for steel spare?

My Nuevo II has alloy wheels but a steel spare. I assume steel wheels use a different wheel bolt but none are provided by A/S quite an oversight I feel. Whilst I would not contemplate changing a wheel myself I would be stuck if I did not have the correct bolts.
Does anyone know where I can get a set of 5 bolts for steel wheels at a fair price?

Definitely worth thinking about, though it doesn't ~necessarily~ follow that different wheel bolts are needed - I've owned a vehicle with alloys that had a near-invisible set of steel inserts set into the wheel, and they took standard steel wheel bolts.

For the additional cost of original Peugeot parts I wouldn't take a chance on it - I'd take my van's VIN with me to a dealer and get a set of correct originals.

My Lancashire had no locking bolts for the alloys. I found it extremely difficult to get the wheel bolt specs to order suitable locking bolts. Peugeot were of no help at all. In the end I guessed and ordered. When they came I checked head taper angle as well as thread and was relieved that I had bought the right ones. However - the van came with an adapter plate for the steel spare and nobody can tell me how to use it - any ideas greatefully received!

You will find the Fiat dealers chepaer than the Pugeot dealers for your wheel nuts/bolts

Found these on eBay item no. 350880775265. They are from a 2002 model but does anyone know if they will fit the x250 range?